Curb flume



FIG. 1 is a top, front, left side perspective view of a curb flume showing my new design;

FIG. 2 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The dashed broken lines depict portions of the article that form no part of the claim. 

CLAIM The ornamental design for a curb flume, as shown and described. 